Picnic coolerbag PQD 201/Green

X.Fo ice package cooler bag (cold-drink maker )was invented by Qingdao Dannuo Co ltd. in 2012. The patent No. ZL 2011 2 0109110.3,which is the best mobile ,mini, cold drink-keeper with making down the temperature immediately, and keep the cold temperature of cooler bag for long time one day, that means you could have cold drink for whole day! How cool design! How to use this? Ice package curtain could be taken into freezer to get frozen, then into cooler bag to surround the drink,so you can get real cold drink at any time! One test result,(1.25L cola or others in normal temperature 20.4),after 15 min.the tempterature of drink down to 11.1,after 7 hours, the temperature of cooer bag, is only 8.7. The ice package curtain could be used for many times.